2的4次方是16。
到1545年，卡达诺编写了有关二次方程的著作。
By 1545, Gerolamo Cardano compiled the works related to the quadratic equations.
一个空的电子阅读器和一个满的电子阅读器相比，差距仅有十的负十八次方克。
The difference between an empty e-reader and a full one is just one attogram.
1埃的立方等于10的负30次方。
4乘以10的负19次方。
所以，执行时间随资产数量的三次方增长。
So, the execution time grows cubically as a function of the number of assets.
所以那是254乘以10的-9次方米。
得到两个解，这是二次方程。
一个原子体积大约是，一个埃的三次方。
And an atomic volume, it's going to be on the order of 1 angstroms cubed.
这是2的64次方，是相当大的数字了。
牛顿发现万有引力与距离的二次方成反比。
Newton found the law of gravity, which goes like 1 over the square of the distance between the things gravitated.
对单个原子，就是10的负18次方焦耳。
这是一个三次方程，事实上是有一个公式可以解出。
可以看到，对于比较小的2的幂次方，浮点数是非常精确的。
As you can see, floats are pretty accurate for small powers of two.
把床垫翻过来并每三个月调换一次方向以延长使用周期。
Flip your mattress and rotate it every three months to extend its life span.
艾里斑的亮度(点光源恒星的图像亮度)正比于孔径尺寸的四次方。
Airy disk brilliance (the brightness of a point-source stellar image) is proportional to the fourth power of aperture.
每个距离的大小为2 的幂次方减一，因此这里有一个明确的模式。
The size of each gap is one less than a power of two, so there's a definite pattern here.
它等于T分之一，单位是秒的负一次方,大部分物理学家叫它赫兹
It is one over T, and so the units are seconds minus one but most physicists would call that "hertz."
每次方法调用自身时，上次保存的开始时间值就会被覆盖并且丢失。
Each time the method called itself, the saved start time value from the last call would be overwritten and lost.
宇宙科学家们透露他们发现了一块重达10的46次方克拉的宝石。
Space scientists revealed that they had discovered a ten billion trillion trillion carat gem.
这两次方法调用的第一个参数是一个正则表达式，用于指定用户可能传入的URL。
The first argument of both of these calls is a regular expression specifying the URL that the customer may pass in.
也就是说，三个人能组成多少个不同的二人组，上面的结果就是0.99726的多少次方。
That is 0.99726 to the power of the number of unique pairs that can be made of three people.
穿过芯片的电子可以“识别”某一磁场，该磁场每隔几百纳米(十亿分之一米)就变换一次方向。
Electrons flowing through the chip would "see" a magnetic field that flips from one direction to the opposite every few hundred nanometres (billionths of a metre).
穿过芯片的电子可以“识别”某一磁场，该磁场每隔几百纳米(十亿分之一米)就变换一次方向。
Electrons flowing through the chip would "see" a magnetic field that flips from one direction to the opposite every few hundred nanometres (billionths of a metre).
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